Line a square 8” baking pan with wax paper or parchment paper.

In a pot, over low heat, add the chocolate chips, sweetened condensed milk and the sea salt. Melt, stirring often with a large wooden spoon.

Once all is well blended, remove from the heat and add the vanilla. Pour into the wax paper lined baking pan and spread evenly with the back of the wooden spoon.

Refrigerate for 3-4 hours until firm.